Olallieberry Pie Returns to Pie 'n Burger

After Tuesday's big news that the oldest of old-school burger chains is launching a food truck, there's more from Pie 'n Burger: Today they begin serving their seasonal olallieberry pie.

It happens every year, and every year, it's a blink-and-you'll-miss-it sort of deal. The olallieberry pies should only last through late June, so go now. But not until we've reserved one for ourselves.

What exactly is an olallieberry, aside from being difficult to spell? It's a cross between the loganberry and the youngberry, each of which are a hybrid between a blackberry and a raspberry or a dewberry, respectively. Don't even get us started on marionberries.